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duplex microstructure

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Published: 01 January 2024
Fig. 6 Fatigue crack growth characteristics for a duplex-microstructure conventionally solution treated and aged Ti-6Al-4V fan disc forging. r x , monotonic plastic zone dimension in the x -direction; r y c cyclic plastic zone size in the y -direction. Modified from Ref 38 More
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Published: 01 January 1993
Fig. 2 Microstructure of cast Fe-22Cr-5.5Ni-3Mo-0.15N duplex stainless steel etched electrolytically in 40% NaOH. 25×. Courtesy of The Welding Institute More
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Published: 01 December 2004
Fig. 39 Microstructure of high-carbon type 430 stainless steel with a duplex martensite-ferrite grain structure, revealed using (a) glyceregia, (b) Beraha's tint etch, and (c) aqueous 60% HNO 3 at 1 V dc for 60 s More
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Published: 01 December 1998
Fig. 44 Microstructure of a typical mill-annealed duplex stainless steel plate showing elongated austenite islands in the ferrite matrix. Etched in 15 mL HCl in 100 mL ethyl alcohol. 200× More
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Published: 01 December 2004
Fig. 18 Microstructure of wrought 7-Mo duplex stainless steel (Fe-<0.1%C-27.5%Cr-4.5%Ni-1.5%Mo) solution annealed and then aged 48 h at 816 °C (1500 °F) to form sigma. Electrolytic etching with aqueous 20% NaOH (3 V direct current, 10 s) revealed the ferrite as tan and the sigma as orange More
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Published: 01 December 2004
Fig. 30 Microstructure of 7-Mo PLUS duplex stainless steel (Fe-<0.03%C-<2%Mn-27.5%Cr-4.85%Ni-1.75%Mo-0.25%N) welded with Nitronic 50, etched with Beraha's BI reagent, and viewed with bright-field illumination. Ferrite is colored, and austenite is unaffected. The magnification bar is 200 More
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Published: 01 December 2004
Fig. 51 Microstructure of as-cast ASTM A 890-5A duplex stainless steel (Fe-<0.03%C-<1.5%Mn-<1%Si-25%Cr-7%Ni-4.5%Mo-0.2%N) in the solution-annealed condition. Etched with LB1 (100 mL water, 20 g NH4FHF, and 0.5 g K 2 S 2 O 5 ). Austenite is colored, and ferrite is unaffected. Because More
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Published: 01 January 1996
Fig. 9 Duplex austenite-ferrite microstructure for type 308 submerged arc weld showing very high density of inclusions rich in silicon and manganese. Source: Ref 17 More
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Published: 15 December 2019
Fig. 9 Microstructure of 7-Mo PLUS duplex stainless steel (Fe-<0.03C-<2%Mn-27.5%Cr-4.85%Ni-1.75%Mo-0.25%N) etched using Beraha’s reagent (15 mL HCl, 85 mL water, 1 g K 2 S 2 O 5 ) and viewed using bright-field illumination. Ferrite is colored and austenite is unaffected More
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002352
EISBN: 978-1-62708-193-1
..., growth rates, and striation spacings of fatigue crack. The mechanisms of fatigue striation formation are also discussed. The fatigue crack growth in duplex microstructures and cyclic crack growth in polymers are reviewed. The article also describes the mechanisms and models of fatigue crack closure...
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Published: 01 June 2016
Fig. 22 Fatigue crack nucleation sites in Ti-6Al-4V alpha-beta alloy. (a) Fully lamellar microstructure. (b) Fully equiaxed microstructure. (c) Duplex microstructure More
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Published: 01 January 1996
Fig. 10 Fatigue crack nucleation sites in Ti-6Al-4V. (a) Fully lamellar microstructure. (b) Fully equiaxed microstructure. (c) Duplex microstructure. Source: Ref 13 More
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Published: 01 January 1996
Fig. 11 S - N curves ( R = −1) in TIMETAL 1100. (a) Fully lamellar microstructures. Effect of prior β grain size. (b) Duplex microstructures. Effect of α p content. Source: Ref 20 , 21 More
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Published: 01 January 1996
Fig. 14 da / dN -Δ K curves of microcracks in TIMETAL 1100. (a) Fully lamellar microstructure. Effect of prior β grain size. (b) Duplex microstructure. Effect of α p content. Source: Ref 20 , 21 More
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Published: 01 June 2016
Fig. 16 Hydrogen-induced cracking in Ti-6Al-4V (electrochemical hydrogenation method). (a) Cracking in fully lamellar microstructure between α and β lamellae. (b) Cracking in duplex microstructure at grain boundaries and inside primary α grains. Source: Ref 20 More
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Published: 01 January 1996
Fig. 9 S - N curves ( R = −1) in Ti-6Al-4V. B/T-RD, basal/transverse texture, rolling direction; WQ, water quench. (a) Fully lamellar microstructure. Effect of width of α lamellae. (b) Fully equiaxed microstructure. Effect of α grain size. (c) Duplex microstructure. Effect of width More
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Published: 01 June 2016
Fig. 23 Curves depicting stress versus cycles to failure ( R = –1) for Ti-1100 near-alpha titanium alloy. (a) Full lamellar microstructures showing range of effects of prior-beta grain sizes. (b) Duplex microstructures showing range of effects of primary alpha content More
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Published: 15 January 2021
Fig. 11 Optical microscopy image of as-polished fracture surface showing duplex microstructure and a less-advanced region of dezincification. Original magnification: 520× More
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Published: 01 December 2004
in an as-cast condition. (d) Discontinuous network of second-phase particles in heat treated cast or wrought alloys. (e) Duplex microstructure More
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Published: 01 January 2024
Fig. 5 Constant-amplitude fatigue crack growth rate data plotted against the stress-intensity factor range, Δ K , for a duplex-microstructure conventionally solution treated and aged (STA) Ti-6Al-4V fan disc forging ( Ref 38 ) More